I tested mounting my new DA 14mm F2.8 with my genuine Q-K adapter, despite it being pretty dumb range (clashes with Q lenses) for adapting such a lens. Though I must say that it surprised me with sharpness and CA as it's considered a weaker lens in the DA lineup.

Q + Sakar Auto MC 135mm 1:2.5, and Fotodiox MD-PQ adapter. I forgot to remove the lens cap before the pic. This lens has a MFD of 1.5m, and a macro ring that goes from 1:7 down to 1:4. Minolta MD mount. It is clear from the first example photo that my focusing technique using the screen in bright sunlight needs some work. The white focus peaking highlights looked like I had it spot on. The leaves in the second are OOF because there was quite a stiff breeze blowing, and they were whipping back and forth. I guess that could have affected the tree limb, too.

As with most enlarger lens this one has a 39mm mount. To adapt it I bonded a female M42 thread onto a D-mount / Q adapter to create a minimum length adapter. I then mounted a 16mm helicoid tube and mounted the lens on the front of it with another homemade adapter (39mm female to 42male). A proper 39/42 adapter and a 12-17mm helicoid are in the mail and will make infinity focus possible for shorter focal length enlarger lens. This 75mm lens appears to be uncoated and this is noticeable in use. The images here were taken without a lens hood. I think this lens has real potential for close up work. Images are taken at f5.6 ISO125
I saved as JPG , worked the colour curve and sharpened a little. I cut and pasted a section of the original unedited image into the bottom of the images to demonstrate the lack of contrast of the native image.

This lens came off a common old UPA Eastern Bloc suitcase enlarger from back in the 1970s-80s. It has an oddball mount thread (about 32mm). The lens has a little haze on it that has resisted cleaning so far. The images show this. It is not a high tech lens--- with 2 elements up front and only one at the back, but strangely it has a 12 leaved iris. I had to home build an adapter for it. To adapt it I bonded a female M42 thread onto a D-mount / Q adapter to create a minimum length adapter. I then mounted a 16mm helicoid tube and mounted the lens on the front of it with another homemade adapter. ( I still had the enlarger mount.)
The images are at f5.6 ISO125. Saved as JPG.
I colour curved the result and sharpened a little, but have also cut and pasted a section of the original image onto the result.
Overall I think this lens would be passable if I can remove the haze.

Very cool work with those enlarger lenses, you must post a pic of the adapter mod.
Thanks all for your contributions, index is now updated.

Here is an exploded view photo of the setup to use enlarger lens. The need for the helicoid tube is to provide focussing as of course enlarger lens have no focus movement. So the issue is to get the arrangement short enuf to achieve infinity focus. That is easy enough with the 75mm lens and if fact it needs the short extension tube included. But the other 50mm lens I wish to use won't quite get to infinity so I am buying a short (12mm) Helicoid. The camera mount is a D mount / Q adapter with the female thread of an extension tube bonded to it. Having this short as possible is critical. The Travegar lens with its mount is in the foreground. Because of the way its adapted mount is recessed it achieves infinity on this set up.